Denis Wick 6BS vs Denis Wick 9BL

The Denis Wick 6BS has a wider cup diameter.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material
The narrowest point at the bottom of the cup. Affects resistance, volume, and tone color.
Mouthpiece A
    Denis Wick 6BS
    • Trombone
    Throat diameter6.66 mm / 0.2622 in
    Best suited for
    📣High-volume projection — open throat for power
    vs
    Mouthpiece B
      Denis Wick 9BL
      • Trombone
      Throat diameter6.66 mm / 0.2622 in
      Best suited for
      📣High-volume projection — open throat for power

      Throat Diameter

      Throat diameters are essentially identical at 6.66 mm / 0.2622 in, so resistance feel will be comparable.

      Which is better?

      Neither mouthpiece clearly dominates the other — the right choice depends on your embouchure, playing style, and the sound you're after. Try both if possible.

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